Confirmed root cause via tccd's own log output: the hardened-runtime
hardened-runtime prompting policy checks for
com.apple.security.personal-information.addressbook (the Contacts
framework's TCC service is still internally named kTCCServiceAddressBook,
a holdover from the old AddressBook framework), not
com.apple.security.personal-information.contacts as the entitlements
file had. With the correct key, tccd allows the prompt and access is
now granted correctly on both macOS 27 beta and 26.5.1 stable — this
was never an OS bug, notarization requirement, or beta-only issue.
Also keeps the fuller CNError domain/code/userInfo logging added while
diagnosing this, in case Contacts TCC issues resurface.
Personal Data Tools: native Calendar, Reminders, Contacts (hidden pending
Apple TCC fix in beta), and Location & Maps access via EventKit, Contacts
framework, and MapKit. Write actions (create event/reminder, complete
reminder) gate through an approval sheet. Four hardened-runtime entitlements
added to oAI.entitlements; Info.plist usage strings added for all services.
Personal Data section shows a β badge while Contacts is hidden.
2nd Brain always-trust: inline toggle on the Agent Skills row for the skill
named "2nd Brain" skips the bash approval dialog when the command contains
.brain_helper.py, gated by three runtime checks in MCPService.
Research agents: spawn_research_agents tool runs up to 5 concurrent read-only
sub-agents (read_file, list_directory, search_files, web_search — no write,
no bash, no nesting). Bounded by maxConcurrentAgents setting (default 3) and
a hard ceiling of 8 tasks. Added items field to Tool.Function.Parameters.Property
for JSON Schema array support; wired into AnthropicProvider.convertParametersToDict.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>